feat(cli): add user simulator, docker support, and external knowledge source handling

- Added UserSimulator service for automated interactions.

- Added Docker simulation script and documentation.

- Supported --knowledge-source flag defaulting to ~/.agents/kb.md.

packages/core/src/config/config.ts

@@ -744,6 +744,8 @@ export interface ConfigParameters {
   };
   vertexAiRouting?: VertexAiRoutingConfig;
   logRagSnippets?: boolean;
+  simulateUser?: boolean;
+  knowledgeSource?: string;
 }
 
 export class Config implements McpContext, AgentLoopContext {
@@ -982,6 +984,8 @@ export class Config implements McpContext, AgentLoopContext {
   private lastModeSwitchTime: number = performance.now();
   readonly injectionService: InjectionService;
   private approvedPlanPath: string | undefined;
+  private readonly simulateUser: boolean;
+  private readonly knowledgeSource?: string;
 
   constructor(params: ConfigParameters) {
     this._sessionId = params.sessionId;
@@ -1310,6 +1314,8 @@ export class Config implements McpContext, AgentLoopContext {
     this.fileExclusions = new FileExclusions(this);
     this.eventEmitter = params.eventEmitter;
     this.enableConseca = params.enableConseca ?? false;
+    this.simulateUser = params.simulateUser ?? false;
+    this.knowledgeSource = params.knowledgeSource;
 
     // Initialize Safety Infrastructure
     const contextBuilder = new ContextBuilder(this);
@@ -3023,6 +3029,14 @@ export class Config implements McpContext, AgentLoopContext {
     return this.usageStatisticsEnabled;
   }
 
+  getSimulateUser(): boolean {
+    return this.simulateUser;
+  }
+
+  getKnowledgeSource(): string | undefined {
+    return this.knowledgeSource;
+  }
+
   getAcpMode(): boolean {
     return this.acpMode;
   }

packages/core/src/config/defaultModelConfigs.ts

@@ -344,7 +344,7 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
       family: 'gemini-3',
       isPreview: true,
       isVisible: true,
-      features: { thinking: false, multimodalToolUse: true },
+      features: { thinking: true, multimodalToolUse: true },
     },
     'gemini-2.5-pro': {
       tier: 'pro',

packages/core/src/telemetry/llmRole.ts

@@ -17,4 +17,5 @@ export enum LlmRole {
   UTILITY_AUTOCOMPLETE = 'utility_autocomplete',
   UTILITY_FAST_ACK_HELPER = 'utility_fast_ack_helper',
   UTILITY_STATE_SNAPSHOT_PROCESSOR = 'utility_state_snapshot_processor',
+  UTILITY_SIMULATOR = 'utility_simulator',
 }